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Finding the Third Proportional to 6,918 and 17,199

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Solution

The third proportional to 6,918 and 17,199 is: 42,758.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,918 : 17,199 = 17,199 : x
  2. Step 2: Convert to fraction form
    6,918/17,199 = 17,199/x
  3. Step 3: Cross multiply
    6,918x = 17,199 × 17,199
  4. Step 4: Simplify right side
    6,918x = 295,805,601
  5. Step 5: Solve for x
    x = 295,805,601/6,918
  6. Step 6: Final answer
    x = 42,758.83

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Why These Related Problems?

These problems maintain the same ratio (2.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.